Report for 30556

Name

HMH-30556 - HMH, US

AS Adjacency Report

In the context of this report "Upstream" indicates that there is an adjacent AS that lines between the BGP table collection point (in this case at AS4637) and the specified AS. Similarly, "Downstream" refers to an adjacent AS that lies beyond the specified AS. This upstream / downstream categorisation is strictly a description relative topology, and should not be confused with provider / customer / peer inter-AS relationships.

30556 HMCO - Houghton Mifflin Company

  Adjacency:     3  Upstream:     3  Downstream:     0
  Upstream Adjacent AS list
    AS174     COGENT Cogent/PSI
    AS8113    VRIS-8112-8115 - Verizon Internet Services Inc.
    AS7046    UUNET-CUSTOMER - MCI Communications Services, Inc. d/b/a Verizon Business

Announced Prefixes

Rank  AS       Type    Originate Addr Space  (pfx)   Transit Addr space  (pfx)  Description
5664  AS30556  ORIGIN  Originate:      12544 /18.39  Transit:          0 /0.00  HMCO - Houghton Mifflin Company

Aggregation Suggestions

        Filter: Aggregates, Specifics

This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.

 Rank AS            AS Name                                      Current  Wthdw  Aggte  Annce Redctn       %
18371 AS30556 HMCO - Houghton Mifflin Company               6      0      0      6      0   0.00%


  Prefix               AS Path                              Aggregation Suggestion
  65.213.77.0/24       4637 3491 701 7046 30556   
  155.44.80.0/21       4637 3491 701 7046 30556   
  155.44.208.0/21      4637 3491 701 7046 30556   
  155.44.216.0/21      4637 3491 19262 8113 30556   
  155.44.224.0/20      4637 174 30556         
  155.44.240.0/21      4637 174 30556         

Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.

AS30556   6 More Specifics   6 Total Advertisements   HMCO - Houghton Mifflin Company
    65.213.77.0/24                65.192.0.0/11
    155.44.80.0/21                155.44.0.0/16
    155.44.208.0/21               155.44.0.0/16
    155.44.216.0/21               155.44.0.0/16
    155.44.224.0/20               155.44.0.0/16
    155.44.240.0/21               155.44.0.0/16

Whois Entry

whois: 402603

IANA has recorded AS30556 as originally allocated by 
/usr/bin/whois -h jwhois.apnic.netr "AS30556\n             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #
             
             
             ASNumber:       30556
             ASName:         HMH-30556
             ASHandle:       AS30556
             RegDate:        2003-11-05
             Updated:        2015-12-23
             Ref:            https://rdap.arin.net/registry/autnum/30556
             
             
             OrgName:        HMH
             OrgId:          HOUGH-3
             Address:        125 High Street
             City:           Boston
             StateProv:      MA
             PostalCode:     02110
             Country:        US
             RegDate:        2009-05-21
             Updated:        2024-12-20
             Ref:            https://rdap.arin.net/registry/entity/HOUGH-3
             
             
             OrgAbuseHandle: NETWO380-ARIN
             OrgAbuseName:   Network Manager
             OrgAbusePhone:  +1-617-351-5000 
             OrgAbuseEmail:  netadmin@hmhco.com
             OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO380-ARIN
             
             OrgTechHandle: NETWO380-ARIN
             OrgTechName:   Network Manager
             OrgTechPhone:  +1-617-351-5000 
             OrgTechEmail:  netadmin@hmhco.com
             OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO380-ARIN
             
             
             #
             # ARIN WHOIS data and services are subject to the Terms of Use
             # available at: https://www.arin.net/resources/registry/whois/tou/
             #
             # If you see inaccuracies in the results, please report at
             # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
             #
             # Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
             #